Radio set



FIG. 1 is a top plan view of a radio receiver showing my new design;

FIG. 2 is a left side elevational view;

FIG. 3 is a front elevational view;

FIG. 4 is a right side elevational view;

FIG. 5 is a bottom plan view;

FIG. 6 is a rear elevational view; and

FIG. 7 is a front bottom and right side perspective view. 

The ornamental design for a "radio receiver", as shown. 